In the fluid catalytic cracker (FCC), the cracking reaction is __________ (i) and the regeneration is ____________ (ii) (i) endothermic (ii) exothermic (i) exothermic (ii) endothermic (i) endothermic (ii) enodthermic (i) exothermic (ii) exothermic TRUE ANSWER : ? YOUR ANSWER : ?
'Unreacted core model' represents the reaction involving Roasting of sulphide ores Manufacture of carbon disulphide from elements None of these Combustion of coal particles TRUE ANSWER : ? YOUR ANSWER : ?
__________ is the controlling step in a highly temperature sensitive fluid-solid non-catalytic reaction. Gas film diffusion Ash diffusion Chemical reaction None of these TRUE ANSWER : ? YOUR ANSWER : ?
Effectiveness factor of a catalyst pellet is a measure of the __________ resistance. Gas film Pore diffusion Chemical reaction None of these TRUE ANSWER : ? YOUR ANSWER : ?
Find a mechanism that is consistent with the rate equation and reaction given below: 2A + B → A₂B, ( - rA) = k.CA.CB A + B ⇋ AB;AB + A → A₂B A + B ⇋ AB ; AB + A → A₂B A + A ⇋ AA;AA + B → A₂B A + A ⇋ AA;AA + B → A₂B TRUE ANSWER : ? YOUR ANSWER : ?
Design of heterogeous catalytic reactor involves consideration of __________ steps. Only chemical Both A & B Neither A nor B Only physical TRUE ANSWER : ? YOUR ANSWER : ?
Bulk diffusion in catalyst pore __________ with increase in pressure. Remains unchanged Decreases Increases Increases exponentially TRUE ANSWER : ? YOUR ANSWER : ?
A chemical reaction occurs when the energy of the reacting molecules is __________ the activation energy of the reaction. Equal to or more than Equal to Less than More than TRUE ANSWER : ? YOUR ANSWER : ?